Digital Trends - In an unusual move, federal authorities will be contacting computer users with systems infected by the Coreflood botnet Trojan and asking them to agree to allow them to send commands to the malware so it will delete itself. The move comes in the in the wake of a coordinated takedown earlier this month by the FBI and other authorities, in which the U.S. government essentially substituted its own command-and-control servers in place of those used by Coreflood and issued commands telling the program to shut down on infected PCs. The move reduced activity from the Coreflood botnet by about 90 percent in the United States and by nearly 75 percent worldwide. However, infected PCs still have dormant Coreflood software on them, and the feds would like to get rid of it.